multiplayer

[thin stratus]

Since the movement component alreary replicates, you don't have to call add movement on the serber

Server*

[cold sparrow]

I see, so the architecture that I have is not the best (client has a simple pawn, server has a character)

(I follwed and example from you tube guy making top-down multiplayer)

[thin stratus]

You want your player to have a character that he controls, right?

[cold sparrow]

y

[thin stratus]

Yeah, give him his character, possess it with the clients controller

Or set it as default on the gamemode

And add movement on the client

[cold sparrow]

so, character will move on the client, replicate to the server and server will replicate to other servers, right?

[thin stratus]

Theoretically you are right with setting it server side. But ue4 does that for some things already for you

Other clients

There is only one server

OwningClient - >Server - > other clients

• also back to the original client

Have you read my compendium?

[cold sparrow]

yes, I did

[thin stratus]

Okay (:

[cold sparrow]

it is the best source of info available! Btw, thanks so much for it!

[thin stratus]

No biggie (:

[cold sparrow]

ok, will make new BPs to get the idea going

[alpine tangle]

This was working once upon a time, but now it's not

I'm running this function on server

The inventory slot has a thumbnail that is bound to the item thumbnail of the item data structure

[thin stratus]

Are you passing the data back to the client?

[alpine tangle]

@thin stratus No, do you have to do anything widget related on the client instance of an actor though?

[thin stratus]

Well widgets are client side. It you set the data on the server and don't replicated it or send it back, then the client will never receive the update

[alpine tangle]

So how would you send it back?

Would I call an event on the owning client that gets variables passed thru from this function?

[thin stratus]

For example, yes

Usually you use a smaller version of the Inventory. Only the information that is needed for the ui

Like itemID and stacksize or what ever you have there

Icon, description etc should be stored in a data table which has the itemid as row name

So everything that is static and doesn't change.

[alpine tangle]

Is that for optimization?

[thin stratus]

Also yeah

Wrote a few inventory systems by now

So for me it's default

If yours send and saves more data, maybe even static data, then this would be optimization for you

[alpine tangle]

I really appreciate the feedback, I don't understand the data table part yet, but I really have a grasp on structures now thanks to creating the inventory system

[thin stratus]

Datatables is like an excel table

First column has a unique name

They are based on a struct

So you create a struct and then create a datatable and selecr that struct

Rowname is given and must be unique, other columns are defined by the struct

In code you can pass the table your rowname and get the row from it

E.g. Pass itemid as rowname and get name, icon, description etc

What ever static information you have about your item

[alpine tangle]

So the rowname is basically the itemID

[thin stratus]

Yeah in general it's a name

[alpine tangle]

What's the plus side of this vs how I did it

[thin stratus]

But most people tend to give items numbered ids

If you pass all the data back and forth it costs bandwidth

There is no reason to pass data from client to server etc if it's never changing

Clients can just use the replicated id and get the data from the datatable

You only need to replicate data that changes

[alpine tangle]

then they access everything else locally

[thin stratus]

Like stacksize. Durability

[alpine tangle]

Okay

[thin stratus]

Yeah name, icon etc would be locally

[alpine tangle]

I'm gonna mess around with it for a little bit and see if I can change my system to that

I see how beneficial it is now

[thin stratus]

That reduces your actual inventory structure to mayve the itemid and stacksize

Sure (:

[alpine tangle]

So I created a data based off of ItemData

datatable*

Now I create a row and that is basically the information for that object

?

and basically the physical actor of the weapon or whatever only has 1 variable which is a name

ah i see and now i can make my inventory just a structure of names

[thin stratus]

Yeah if you have no other changing data

Datatables are not for storing runtime changes :P, it's readonly at runtime

[alpine tangle]

Thank you so much for your help man

It works now 😃

[thin stratus]

(:

[lament kettle]

I can't replication "Set Skeletal Mesh" for some reason...

[lament kettle]

fixed it

[sweet horizon]

Good day. It kind of feels bad that I'll jump right into asking a question given I've just joined haha, but here it goes:

Can a dedicated server perform CreateSession calls? I don't know what player ID to put as 1st param (C++)

[thin stratus]

There should be tutorials that you csn Google that show how to do that

You call the usual createsession stuff on RegisterServer

Idk that out of my head. Haven't worked with session + dedi in a while

[sweet horizon]

Many thanks. I saw articles saying that a player ID / param 1 of '0' would work for CreateSession. Think I'll work around that for now.

[night jay]

Anyone know how big actor references are when replicating em?

[jolly siren]

https://docs.unrealengine.com/latest/INT/Gameplay/Networking/Actors/Properties/ObjectReferences/

so the size of a FNetworkGUID I guess. Which is mostly just a uint32 (4 bytes)

[night jay]

That's much smaller than I thought it would be

[dire temple]

Hello is anyone around?

[sweet spire]

maybe

[slim holly]

@night jay you really shouldn't need to replicate references

(I don't even know if it works)

[night jay]

it works

and really it's more for ease of use than anything

[slim holly]

I wonder how does it convert it tho 🤔

[cyan bane]

What techniques do you guys use to minimize how noticable small position corrections are?

[lilac egret]

Do I have to replicate everything manually or is there a technique to replicate things automatically and choose the ones you do not want to replicate?

[maiden atlas]

If you set a variable to be replicated, then any time you change it on the server side it will be replicated to the clients

You can also set it to rep-notify, where a function is automatically called after a new value is replicated for it

This is pretty handy

However, you do have to set it on the server, so you will need to make a server replicated setter function

An example would be a function replicated to server that sets the bool FlashlightOn to true

Then in the rep notify for FlashlightOn you could put the code for toggling the light on and off

[twin juniper]

replicating everything goes against the whole client/server simulation model unreal uses. theres no reason to replicate that footstep sound, because you can just throw it into something the client is already simulating locally (walking animation). theres no reason to replicate that explosion entity, just tell the clients to spawn their own explosion at these cord's. even better you can just spawn explosions based off an event thats already being simulated, like this impact here means spawn explosion, but without the server needing to tell the clients anything.

you should strive for super accurate simulation of gamestate, but leave critically important things like a players health, or what weapon they are holding up to replication.
replication does indeed start somewhere, but allot of things can run off stuff the client is already simulating locally

[trail dragon]

When a pawn is possessed it calls PossessedBy(AController* ...), but only on the server. How does the client know when it's possessing a new pawn?

I have a weird situation where when a pawn is possessed it needs to offset by clientside-only data. We're already trusting the client (It's VR) so..

[trail dragon]

I can send the data to the server (it's head position) but when they first connect to a server and it tries to spawn them, it won't be available

I guess I can override OnRep_Controller which should be called when it's set to a new PC

But then I don't know how much to offset them. Maybe I should just start everyone as a spectator and once they've sent data to the server about their position, then we spawn them, and offset their pawn when they possess it.

[weak pasture]

you can just call a client function inside PossessedBy cant you?

[trail dragon]

@hoary python My fear with Possess->Call RPC is that they will spawn and then flicker to their new location

Possess puts them at the actual Pawn's location, and then they offset to their actual location.

[weak pasture]

could try lerp positions from their current to the new one, maybe

ah i see, vr hmd position, might not want to lerp that? havent touched much VR. if not then yeah i would probably think the on_rep override on the variable would work for you

[trail dragon]

Yeah and I'm doing non-conventional stuff too. Technically the VR player's head is relative to their origin, and their origin is the pawn

But I represent the player by a sphere where their actual head is, so to make your sphere line up with where you're supposed to spawn you have to offset the pawn by the offset of the head effectively

[weak pasture]

are the other clients meant to see each others head spheres? might be a case of letting the server know where the clients head is, making sure the clients got the authority on the update so they dont have any stuttering based on ping of course, but interpolating it with the server. that would let you start with it with the server in mind

[trail dragon]

Yeah - effectively you're just represented by where your head actually is and your distance from your origin is irrelevant

I just don't want people to have to stand in the center of their room to line up correctly :p

Yeah the problem with letting the server know where the client's head is is that it doesn't get sent immediately, so on first spawn it's still zero. The solution for this is start everyone in spectator mode and then in OnRep the first time it comes in queue it up for being okay to spawn.

[weak pasture]

could do, or if you are coming from a menu and are seamlessly travelling player controllers, you can use copy properties to bring that location over and have it from the start, as the persons head will still be there before that level starts 😃

[trail dragon]

Can't seamlessly travel when connecting to a server

Has to be a hard-travel so I don't think you can copy any properties over.

[weak pasture]

dedicated server? rip that idea then. 😦

[trail dragon]

Nah even just connecting to another person's server can't be seamless, seamless only works when changing maps

[weak pasture]

ok right, yeah sorry I meant if you were coming from a menu with the host. for our game you hard travel to a Lobby then seamless to the match. i guess youll have a hard travel at some point anyway, so you're right that wont fix it

[trail dragon]

I'll try the OnRep_Controller thing (since your client doesn't move views until that happens) and hope that works, I realized I can probably just do AddActorLocalOffset(GetTransform().TransformPosition(HMDPosition));

Gotta sit through a 5 minute compile to find out though 😕

Well, OnRep_Controller doesn't get fired

[trail dragon]

Okay. OnRep_Controller only gets fired on the client, which means it doesn't get fired in singleplayer (since that's a server)

So, this idea is out 😦

Going to just go with sending a RPC after possession and worry about the possible flicker later.

[sweet horizon]

Hello 😃 Question with regards to Unreal dedicated servers

Assuming that a dedicated server calls CreateSession, what would be the difference between the Session Settings being set to bIsDedicated = true or bIsDedicated = false?

For the bigger picture, I am trying to integrate Unreal networking with AWS GameLift and Steam. I was thinking that Unreal dedicated servers would sit in AWS serverspaces, and they would manage Steam sessions and clients connecting to them

So far though I've discovered that trying to host a dedicated Steam session using an Unreal dedicated server requires you that you use the Steam master server setup

[glad sedge]

er.. Native NetSerialize StructProperty /Script/Engine.Actor:ReplicatedMovement (ScriptStruct /Script/Engine.RepMovement) failed.

What does that mean?

[glad sedge]

side question - do default values created by the client have to be replicated in order for the server to use em?

[slim holly]

default values for what?

only server should be allowed to set values for gameplay critical components

[jagged goblet]

is it possible to replicate a widget

[rare cloud]

@jagged goblet, nope

but from your widget you can easily get Player Controller or Character or Player State

and call RPC

Widget are only client-side

[jagged goblet]

thanks jack, that explains a lot lol

[lament kettle]

How do I go from client to everyone, without using multicast?

Or is there no choice?

ATM, i'm using server->multicast

[brittle sinew]

That is the correct flow.

Multicast functions must be called from the server

[lament kettle]

Problem is, I'm spawning an actor (weapon) from the character pawn (called via server function, and I've set the ownership to that pawn).

When I call the "event fire" function within the weapon (spawned actor), it only works via client.

[brittle sinew]

I'm not quite following your flow, what are you trying to do? Are you first trying to call up to the server and then multicast?

Or are you trying to multicast directly from the client?

[lament kettle]

Okay, flow is this.

1. Pickup weapon (server spawns an item from the base character).

2. Fire weapon calls a server function within the base character.

3. Weapon event fire has an client function, that does the vfx/sfx.

http://i.imgur.com/mPPqJXj.png

^Spawning weapon (when picked up)

[brittle sinew]

Okay, so could you describe the issue a little more? I'm not quite sure what you mean by "it only works via client", that could mean a lot of things at this point

[lament kettle]

One moment please.

http://i.imgur.com/0LbaWpC.png

^Firing weapoin from base character.

http://i.imgur.com/mr8aKbd.png

[sweet spire]

jesus that switch

[lament kettle]

^Function thats being used

@sweet spire ill simplify that later

simple enum

[sweet spire]

I tend to attach process like that too more defined tyhpes

[lament kettle]

hitscan, melee, item

[sweet spire]

ie, most gun fire can all run on the same thing

all guns functionality tend to run the same

from pistols to shotguns

[lament kettle]

Not in my game.

[sweet spire]

What is different?

just curious

[lament kettle]

Differnt amount of sfx and spread methods.

I have a master weapon

[sweet spire]

Sfx?

[lament kettle]

so, i usually tend to put all common in there

anyways, thats not what i need atm

i need to figure out why the line trace only works on the sole client

[sweet spire]

u can carry spread types and amounts & sound effects, etc in some sort of weapon container

[lament kettle]

when on dedicated servers

[sweet spire]

ohh

[brittle sinew]

That trace doesn't quite look right—a forward vector is a direction. Once you multiply it by a distance you can use that as an ending point if you take into account their location (adding it)

[lament kettle]

@sweet spire i have a master weapon

[sweet spire]

cus ur using get player controller 0

[lament kettle]

is that why its not working?

like why its not replicating to other clients?

[sweet spire]

well

Your wanting to replicate vfx im guessing?

[lament kettle]

Yes

[sweet spire]

U just need

a simple bool

thats it

This is why i recommend my methord

[lament kettle]

and that is?

[sweet spire]

Bool, IsFiring, Rep notify

If target is firing start firing function

If target IsFiring False, stop fire function

and do line trace, but not from player controller 0

[lament kettle]

That makes sense actually, I'll give that a try.

From where then?

the gun

?

But I want the players camera.

[sweet spire]

Is your char aim locked too camera?

ie relative too pitch, yaw

[lament kettle]

It starts from the barrel to where the crosshair is.

[sweet spire]

like typical shooter

barrel to crosshair what

First time iv heard of anyone doing that

[lament kettle]

Really?

[sweet spire]

Well i guess thats kinda even easier

Well heres the thing

If u line trace from a barrel to cross hair

its like what

Your line tracing on a funky angle

instead of from player perspective

If i understand what u said right

i might misunderstand what you said

Heres an example from me

When my players weapon fires

The Vfx Fires from the Barrel too the center point on client only

and for Server it fires from camera to center

[lament kettle]

I'm shooting from the barrel of the gun, to where their crosshair is aiming at.

It's that simple.

[sweet spire]

Thats some really weird aiming

ops let me recorrect that i said

I fire from client camera pos too cross hair, and spawn muzzle flash on barrel*

Im not too sure how to advice you on that linetrace setup

firing from playercontroller 0 only works on a owning client really, it wont work for any other pawns

Is that weapon the master bp?

that bp that does firing

[slim holly]

I wouldn't use OnRep for firing a weapon

[sweet spire]

Why not?

[slim holly]

it might get pushed back during saturation

causing delay

[sweet spire]

its only for vfx

super cheap way to handle it

[slim holly]

wouldn't you use the same bool for vfx as you use for firing?

logic and timing is identical anyway

[sweet spire]

you are simulating clients firing

vfx

If other players start firing have the bool replicate

[slim holly]

well yea, rpc it to server but don't run the projectile spawn/damage on clients

[sweet spire]

It way cheaper to replicate a visual bool than multi cast

[slim holly]

Im just saying you have to transfer that bool to server anyway, might aswell drive sfx from it

[sweet spire]

more bandwidth

the bool drives the vfx

[slim holly]

not if you set on client first and set replication to skip owner

[sweet spire]

most of the time u dont need to replicate things like linetrace impact and stuff

[slim holly]

thus you would save bandwidth

[sweet spire]

what..?

I think you miss the whole point of it

[slim holly]

no I didn't

[sweet spire]

Instead of having to multi cast stuff, alot of things like this you can on rep bool, and have replicated clients simulate there firing

so any vfx impact or flashes etc

can be simulated

There is no need for accurate bullet holes and stuff most of the time.

[slim holly]

just set the bool on client end, no delays and no need to replicate it to owner, server does the damage logic/recoil/etc once the bool actually reaches it

it's not like you can drive the vfx based on server output anyway

[sweet spire]

man your not listening

the bool has nothing to do

with dmg

recoil

etc

The bool is only there to make clients simulate there cosmetics

[slim holly]

aight fine, do multicasts

[sweet spire]

dont multicast it jesus

[slim holly]

just saying you dont need to

[sweet spire]

major waste

You are 100% missing the point

From 1 bool, you can simulate Muzzle flash, impact damage and sound in two locations for example.

[slim holly]

@lament kettle had issue with 3rd person aim?

[lament kettle]

no

lol

ill just use the server -> multicast work flow

no one here appears to know an alternative

(a proper one that is)

[slim holly]

on...?

[lament kettle]

visual effects

to spawn from server vfx

[sweet spire]

somehow on the past 6 months, i have managed to avoid the need to multi cast at all on this project

[lament kettle]

to all other clients

I'm using rep notify too halcyon

[sweet spire]

multiplayer project as well, 70 player max

dont forget

if u dont replicate there weapon information

it cant do the firing

[lament kettle]

yes

i've repped everything

[sweet spire]

and player controller 0 on replicated pawns to your client, will try and linetace from the controller of the client

[lament kettle]

im trying a new method

give me 2mins

[sweet spire]

Think of it like this

[slim holly]

so here's what I use: Set weapon bTrigger to true on client -> send to Server to set the same bTrigger to true with replication but skip owner -> drive logic from tick

therefor, you dont need to multicast because the bTrigger is sent to everyone anyway

and they drive the logic from it using tick

[sweet spire]

u dont need to do that anyway because rep notify

[slim holly]

repnotify triggers once, you can initiate it using RepNotify but again but if you need Tick for say, automatic weapon then it's redundant

[sweet spire]

u dont need to use tick for this,

automatic weapons dont need tick 😂

well using onTick

[slim holly]

FOR EXAMPLE

[sweet spire]

There is otherways to handle things

[slim holly]

ÄUTOMATIC WEAPON¨

[sweet spire]

calm down m8

[slim holly]

yea you kinda need tick for automatic weapon

or similar

[lament kettle]

Fixed it.

[sweet spire]

sweet

i wish i had examples from when i use too use it

but now i use actors too replicated costmetic info too clients

[lament kettle]

http://i.imgur.com/enzGVKA.png

http://i.imgur.com/ubxzcOd.png

Top one is from base character.

Bottom image is from the weapon hitscan.

Rotation works too.

[sweet spire]

fuck thats alot of data haha

[lament kettle]

No need to "replicate" via tick, the rotation of the follow camera.

A lot of data?

[sweet spire]

to me anyway

[lament kettle]

Bro, its just the base character.

[slim holly]

whole character ref is way too much

[lament kettle]

You think so?

[sweet spire]

two vectors & char ref bp haha

[slim holly]

oh right

don't send vector start data

[sweet spire]

Im gonna whip you an example up

one moment

[slim holly]

if player can manipulate it, they can kill from spawn

or literally anywhere on the map

if they find the memory address for it

[lament kettle]

its all replicated tho...

how can a player modify it?

[slim holly]

with cheat engines

[sweet spire]

easily

[lament kettle]

it runs from the server tho

not from the client...

[slim holly]

the linetrace should be done solely on server

[lament kettle]

Yes, I understand that.

I'll put is cosmetic

The line trace will be the damage aspect.

[sweet spire]

man theres no need to even make an example

idk how to make it any simple haha

IsFiring, rep notify on all base char, when its true enable VFX weapon fire loop, when its false disable it

when anyone starts firing, there replicated pawn on another client will do the same visually

thats the jist of it anyway

[lament kettle]

how do you pass the character who is firing then?

you need an end vector.

[sweet spire]

u dont need too

There pawns will know about them selfs

every single replicated pawn

Has its own Bool IsFiring

[lament kettle]

Thats assuming the code is within the pawn.

I want the code within the weapon.

[sweet spire]

So if player A starts firing, Player B,C,D verison of player A, start doing cosmetic

Are u replicating weapon

i assume you are

[lament kettle]

yes

[sweet spire]

then there u go

they should know about the pawns own weapon

so u should be able to call it

the visual client side of it that is

[lament kettle]

we've spent 30 minutes on this bisfiring rep

[sweet spire]

its hard to wrap your head around i know

[lament kettle]

and i still have 0 clue how to implement it

[sweet spire]

iv had this talk for ages with people

haha

[lament kettle]

where is the variable?

in the player?

in the weapon?

[sweet spire]

Yeah thats fine

[lament kettle]

where?

[sweet spire]

forget about the blueprint right

for the weapon

You need to understand this

The IsFiring Rep bool

Is to let that replicated pawn know, it can fire

u dont need to worry about the firing logic

You get me right?

its as simple as IsFiring then do the firing

then ever replicated pawn knows about its own bool, & weapon blueprint

IsFiring = True, Do CastToWeaponBlueprint, Do Cosmetic Visual

Make sense?

and ofc IsFIring = False, tell weapon blueprint too stop doing cosmetic visual

That functionality would be inside the rep

here is an example

obviously this applies for game param not cosmetic

But its the same

[lament kettle]

@sweet spire how do you loop the isfiring tho?

you cant use delays

[sweet spire]

what do u mean

by that

u mean the IsFiring bool?

[lament kettle]

yes

[sweet spire]

u dont loop it

On Mouse down its true

[lament kettle]

Okay, my question is this.

[sweet spire]

on mouse up its false

[lament kettle]

How do you pass a character reference.

With an RPC

and if we dont need to pass it, how do we obtain it?

[sweet spire]

why are u need to rpc

u can rpc too server with char ref like usual

but sending important data like vectors for hit traces is not a good idea

oh if ur talking about the bool

u just have the owner of it rpc for the server too set it

like so

[lament kettle]

Okay..

having an issue

This is on the base character:

http://i.imgur.com/WjwDHBz.png

This is the weapon:

http://i.imgur.com/L2hU2TH.png

line trace only happens on client and server

[sweet spire]

yeah uv nearly got it just a little mis understanding

Your weapon bp has a OnTick right?

[lament kettle]

yes?

[sweet spire]

so the weapon blueprint would really be checking If we are firing cosmetically

[lament kettle]

okay?

[sweet spire]

my assumption was your weapon blueprint

fires constantly

while ur holding the fire button

[lament kettle]

first, let us get it working...

[sweet spire]

that what it kinda looked like

Yeah its working

[lament kettle]

No its not?

[sweet spire]

but uv got functionality wrong

How do u handle your loop firing then

[lament kettle]

I dont see the line trace on other clients bro.

I dont care about looping atm.

[sweet spire]

U mis understand again

The IsFiring bool

is just a condition

U wouldnt have your full firing logic in there

It be like

[wary willow]

lol

Let me take over

[lament kettle]

i feel like im talking to a brick

why cant you just send me a sample bp?

[wary willow]

Okay

[lament kettle]

we've talked about this for 2 hours

[wary willow]

2 hours? lol

[lament kettle]

:/

[wary willow]

since 2

lol

[lament kettle]

it feels like im at the dmv

[wary willow]

Anyway, what was your original question?

[lament kettle]

Is using the server to multicast workflow, a good idea? Why or why not? (Origional question)

[sweet spire]

no offense victor but dont jump in right now 😂

just gonna compliate things more

[wary willow]

For some reason, I feel like I wouldn't be

[sweet spire]

well dont man, thats what im saying

already had someone jump in half way

Thats the basis of the rep notify functionality

Its too tell your weapon blueprint if it should be doing cosmetic stuff

Then its flipped on, any replicated pawn will do its firing stuff

when its fliped off

they would stop

also i dont have any sample blueprints because there is better ways to do this for alot of things, but it gets WAY more complex

This is just a super simple & cheap effective way to replicate visuals

also your issue is your lack of understanding of replicate and data control

There u go

the example u wanted

U have both pages not

[lament kettle]

you honestly helped me out Halcyon

I get it now.

[sweet spire]

DO U SEE THE LIGHT FAM

[lament kettle]

YES FAM

[sweet spire]

YES FAM

i remember that feeling

right dont forget

[lament kettle]

it doesnt make sense to keep sending vfx on server shit

[sweet spire]

to put a HasAuthority

[lament kettle]

just a bool

[sweet spire]

in front of the visual stuff

YES MAN

THEL IGHT

if ur client knows about it, like gun start point, socket, etc

then u can do like gun line trace and impact point

if that visual is not CRITICAL

u can have the client simulate it

through cheap af cheesy methods like this

[lament kettle]

yeah

your right

it makes more sense

less data

[sweet spire]

Lets not forget this

a, all required data for it the pawn needs to have with it

b, this is only for cosmetic stuff thts not critical

c, full client side only(except for bool set)

then u can go 1 step further and do like

Ignore owner on rep notify settings

and have your pawn set it on there side, then tell server to change it

but not recieve a copy from server

so there is no delay for the firing client

for the visual that is

[eternal anchor]

anyone used ipv6 ?

[sweet spire]

is ipv6 even in mass use yet?

[slim holly]

to some degree

my ISP lets you use both

however, they dont have translation layer so some sites don't work

as for the context of UE4, Im not sure. afaik it's not that different so it should work

[twin juniper]

do you have to click "component replicates" for the character movement component and the capsule collision of a character for it to replicate smoothly?

[wary willow]

@twin juniper no

[twin juniper]

@wary willow ty

[inner iris]

Great repnotify vfx examples @sweet spire I think I finally get it 😄

Will have a shot at replacing all multicast cosmetic events this weekend

Also regarding the muzzle to center of screen that was mentioned earlier- I think that's pretty much how most 3rd person shooters work, no? Otherwise your bullets wouldn't be accurate (going where the crosshair is pointing), or else the crosshair would need to be off center or dynamic in 3D space

Also @slim holly , regarding your comment "if player can manipulate it, they can kill from spawn".
If you have the server shoot a trace from its version of the player and verify the start and end positions relative to what the client sent, and disallow anything that had changed drastically, it'd stop false messages like this from going through, right?

[sweet spire]

If u input a vector from client

Abd take that in for line trace

Client can spoof it

[inner iris]

Of course, but if the server also runs the same line trace logic and the spoofed trace doesn't match up within a possible distance, it can simply be disallowed surely?

[trail dragon]

@sweet spire Your character should be replicating his view angles to the server

And then you trace from the server (but also on the client for prediction)

Which lets them aimbot but not cheat translations

[inner iris]

@trail dragon Glad to hear it's fine to do it like that. I currently have it set up so that the client can request a server trace if it thinks he hit another player to verify if it was possible/deal damage, but spoofed hits wouldn't make it through as the server would find a big mismatch between the angles like you said.

[trail dragon]

@inner iris It's... complicated to do this right. At least what Source engine does is that when you click, you run the trace on your local machine and do blood splatter/bullet impacts/visual tracer lines, etc. At the same time, you send the message to the server that you click. The server gets the message, and -here's the complicated part- the server rolls back time by your ping to see where the guy you were shooting at was on your local machine. Then the server does the raytrace to see if you did actually hit him, and then the server calculates damage, removes health, checks to see if he gets killed, etc, etc.

If you think about it, A's position is calculated on the server. This is sent to your client (so it's now a one-way time behind his actual position), so when you shoot your message is now a full round trip behind your latest info

So the server rewinds time to see where the guy was when he last sent him to you (effectively...) so it's still server authoritive but it checks against what the client should have been seeing and not what the person is currently at

[inner iris]

Yeah it's pretty complex stuff- have been researching loads of articles and videos relating to this topic. COD, CSGO and a bunch of other top shooters do it like this with the rewinding and use of snapshots. This is definitely way more accurate than my method but a lot more tricky to pull off as you have to store synced server and client locations and rotations etc.

My extremely hacky way of doing it is this:

I want the client's view to be favored as long as he has reasonable ping. So what he sees on his screen as being a hit, should in most cases result in a hit. However with running traces purely on server with no compensation, for any moving targets, he is likely to miss a lot of his shots and be frustrated "where are my bullets going!!!"

So since I want the shooter to be favored, I run the trace locally for him, and only if he detects a player hit, do I then call a server RPC that fires a trace off from the server version of his pawn. Since it'll be a bit off, and the client, server and person being shot at all have different ideas of where they actually are, there has to be some kind of error tolerance. Right now, I have it so that the server will trace, the start and end points of that trace will then run into a final trace that runs on a trace channel looking for a specific "tolerance" collision capsule that is roughly double that of the standard movement capsule. If the server hits this, the shot is allowed and damage is dealt.

I know it's by no means correct but I'm planning on refining it and adding multiple safeguards and case by case conditions to prevent being shot around walls etc.

[trail dragon]

I'm pretty sure what Source/etc do is favor the shooter

[inner iris]

Yeah they do favor the shooter, but their fancy rewind system allows them to favour and be accurate

[trail dragon]

Yours is just "allow cheating" ;p

[inner iris]

😄

If the server has to verify the trace (as if firing on server), I though a lot of cheating methods would be eliminated?

As in, the client doesn't send the server the info it generated, it just tells it to fire normally

Then the info is compared, and if it matches up within a reasonable tolerance, it's allowed

[trail dragon]

How are you going to handle "reasonable tolerance" when the client says he hit a person, but the server says "no you hit the wall 6in infront of you"

[inner iris]

Then the server is right

And it won't allow it

Only if the client says he hit and the server said he hit or was like 10 cm off where the client said he hit

Will it be allowed

[trail dragon]

So every time I poke around the corner and see someone, I can't shoot and have it count until a round trip latency

Plus if he pokes out of a wall briefly, I can't shoot.

[inner iris]

No! you shoot insantly on the client

[trail dragon]

Yes and then the server rejects them all.

[inner iris]

The server rejects if the hits are greater than a certain distance or the angles of fire don't match up. Being shot around things is fairly common in all shooters

[sweet spire]

@trail dragon no need i use prediction keys :p

[inner iris]

"I can't shoot and have it count until a round trip latency" even with snapshots / rewinding, wouldn't you still have to wait for the round trip?

[trail dragon]

You have to wait for the round trip yes, but if they were outside the wall on your screen and you had a clear LOS, it would count

Your method will fail when they are visible on your screen, but have moved behind cover on the server

[inner iris]

Well it'll be favored to allowing the shot, provided the person behind the wall hasn't moved greater than the allowed tolerance distance. Like I said, ping will have to be considered before allowing anything on both ends. Assuming players had reasonable ping (<100ms), then being shot around a corner wouldn't happen very often.

Higher pings it is very obvious, but still happens on almost all games when playing in high ping scenarios

I'll probably have to scrap my terrible system and try to figure out a proper rewinding one at some point in the future

[sweet spire]

if i was u, id actually get the game running smooth and all multiplayer gameplay func working before u try and mess with this stuff

[inner iris]

At the first playtest it was working great but no one could hit anything moving fast due to server RPCs so I went for this system and it works as expected, but you are 100% correct- no point on getting hung up on these kind of details before the game is actually fleshed out.

[sweet spire]

Like seriously prediction and comp is a huge fucking can of worms

[inner iris]

One last question for the road @trail dragon then I promise I won't think about lag comp again for a while 😄

"here's the complicated part- the server rolls back time by your ping to see where the guy you were shooting at was on your local machine. Then the server does the raytrace to see if you did actually hit him, and then the server calculates damage" Wouldn't this also cause the same problem as with my method as you mentioned: "Your method will fail when they are visible on your screen, but have moved behind cover on the server"

In the snapshot, they could be visible to the client, and the hit is allowed, but on server they could be behind a wall and still die. Wouldn't it work similarly?

[sweet spire]

by ping what

stop right there

Id go for gametime not ping

that fluxs so much its unreal

[inner iris]

Yeah I need to figure out accurate ping etc.

My values from the default ping UE4 gives you are way off

[sweet spire]

Server can check where they where, where he was, where he current is

and work it out

with tolerance

[inner iris]

It'd still essentially kill people who were behind walls on the server but not on the client though right? It'd just be able to 100% guarantee that the client was sending the correct info

And be more accurate of course (like you said, if you shot to one side of the player, you might have more or less tolerance with my method)

[trail dragon]

@sweet spire The point still stands, you go back in time so that your server's environment matches up with what the client was seeing.

@inner iris no - the whole point is that the server rolls back it's internal state to match what the client saw when the client clicked (which should have his view angles + button)

[fossil spoke]

Prediction and Compensation can only take you so far, you will never get an perfect system. The case where an player ducks behind cover but still dies is nearly impossible to eliminate.

[sweet spire]

lets thank jesus for FPredictionKeys

[fossil spoke]

Its about compromise

[sweet spire]

THIS ^

this is whati always tell people

[trail dragon]

So the server now "sees" what the client is seeing and runs his traces against the server's version of that timestamp, so still server authoritative, just matches what the client was seeing at the time he clicked

[inner iris]

@fossil spoke Yeah exactly, there's tradeoffs everywhere and even AAA titles have a plethora of bugs. I just want to know if it's worth trying to figure out a big rewind system, or if my iffy method will get by fine.

Ah I get it properly now @trail dragon

[fossil spoke]

Play test it

[inner iris]

The server's trace will be exactly what the client's was, not ahead or behind

[trail dragon]

Aw, can't read up on FPredictionKey, docs are down 😦

[fossil spoke]

If your focus groups cant find any huge issues with it that isnt going to be solved by an better system then wahts the point.

[inner iris]

@fossil spoke Playtesting on an EC2 instance from EU to NA, it works like a charm after tweaking the tolerance hitbox

But haven't tested on a large scale yet

Good point though

If it works it works

[sweet spire]

whatsu r tol hitbox increase

[inner iris]

I basically tested against players running left and right at different ping ranges

Right now it's increased so that a hit under 200ms ping always goes through with fast motion

And higher than that it only goes through if they aren't moving very fast or still (or the angle they are running at is more toward the player than to the left/right sides)

I didn't increase it scientifically, just until it felt like the shots were hitting when they should

[sweet spire]

@trail dragon
https://github.com/EpicGames/UnrealEngine/blob/release/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/GameplayPrediction.h

there u go haha

[trail dragon]

Cheers

[inner iris]

Thank you @trail dragon @sweet spire @fossil spoke - the penny dropped regarding the benefit of rewind vs. other forms of compensation, will stick with my method until an issue comes up, then if needed build a better solution.

Really helpful talk, much appreciated!

[fossil spoke]

No worries, there is always pros and cons its just an matter of working out the benefits of one system vs another.

[sweet spire]

why the fuck is make brush from material not working D:<

oops wc

lmao

[rare cloud]

to confirm that I'm not doing a mistake, if I replicate an array of UObject ptr, all are constructed

not nullptr but zero initialized

it's a normal behavior ?

[modern dome]

Is there a way to replicate a variable manually?

The variable changes per tick and I think it would be better to simulate the variable on clients and sync them periodically

[slim holly]

well yea, you RPC it to/from server

[modern dome]

Hm, I see 😃

[rare cloud]

@Raildex#6923, also be careful standard replication is less expansive than an RPC

[loud sage]

(steam specific), But I'm just curious, are you forced to use quotes with steam achievements, as in Achievement_0_Id="ACH_WIN_ONE_GAME" seems to be used in examples, but would Achievement_0_Id=ACH_WIN_ONE_GAME be valid too?

[tropic moat]

@loud sage looks like it works without ""

[loud sage]

Awesome, thanks for confirming that, steam wasn't liking me today (wouldn't open....at all)

[eternal anchor]

How do I get up and port from within dedicated server ?

[jolly siren]

what?

[eternal anchor]

Ip*

Typed from phone (;

[loud sage]

ip should be the same as your local/public ip of your host

As in, the ue4 server shouldn't set up it's own virtual server to my knowledge. You should be able to get a computer's ip on windows by opening up cmd and using ipconfig and it's ifconfig (or ip link? Not sure about the new stuff) on Linux 😃

Not completely sure about your port though 🤔 I believe it's 7777 by default

[inner iris]

@iniside#8930 are you using Amazon EC2 dedicated servers?

[sweet spire]

i swear im the only person thats like fuck paying for servers build my own 😂

[brittle sinew]

Well, in the past few years virtualization/containerization has taken off

A lot of the time it's just much easier to have things hosted on virtual systems, makes load balancing and scaling a lot easier

For my NAS and stuff like that yeah, I'm going to host it locally, but spinning up new instances of a DO droplet is just so easy

[sweet spire]

true true, however i tend up looking at speed provided and pricing and stuff and im just like

"no, cheaper to cluster my self and rent a line"

then again this depends massively where u live

what line u can get

Uptime,

maint etc

You become responsible for everything

[eternal anchor]

@loud sage I don';t know IP of my host

im hosting server in Kubernetes on Azure

(;

I can host several servers on single node

and if port 7777 by server

it increments

so I need to post ip:port to database to be able to match against particular instance

I'm also evaluating Service Fabric

as it have better integration with Azure

[loud sage]

Ah, kubernetes is pretty awesome, I just haven't used it a heck of a lot 🤔

Doesn't it automatically create a subnet for the cluster and then an IP for each docker host?

[eternal anchor]

you can't really expose publicly hosts

Pods

I mean you can but you create loadbalancer for each and you need public IP for each

[loud sage]

In which case creating a container with permissions that scales accross all hosts should work if they executes something like a docker ps (or whatever kurbernetes offers) <wait no>

nvm, my docker knowledge is $hit, and my kurbernetes knowledge is even worse 😛

[eternal anchor]

the only reliable way I found is to create several groups of agent nodes put each behind load balancer

and then forward ports trough NAT

that is untill we get ipv6 working properly (;

[loud sage]

you'll still need ipv4 nodes though 😉 Not everyone has ipv6 yet

[eternal anchor]

don't care

in few years everyone who matter will have ipv6

[loud sage]

True, true

[eternal anchor]

so back to my original question

is there way to get IP:Port from within server ?

[jolly siren]

steam?

[eternal anchor]

I writing my own backed (;

backend

ok I see it is showed in log

and getting it is not that easy -;-

[jolly siren]

https://docs.unrealengine.com/latest/INT/API/Runtime/Engine/Engine/UNetConnection/RemoteAddressToString/index.html

this might work then

https://docs.unrealengine.com/latest/INT/API/Runtime/Engine/Engine/UNetConnection/GetAddrPort/index.html

https://docs.unrealengine.com/latest/INT/API/Runtime/Engine/Engine/UNetConnection/GetAddrAsInt/index.html

[eternal anchor]

o thanks

it might work

[jolly siren]

hopefully

[eternal anchor]

thing I found is directly in sockets implementation -;

[jagged goblet]

is there a special trick to get weapon muzzle effect to replicate on other clients

I'm multicasting but still doesn't seem to work

runs fine on client who is shooting but others cant see the effect

[lament kettle]

is passing an actor class to the server, dangerous?

[thin stratus]

@lament kettle In what regard

[lament kettle]

http://i.imgur.com/7OENBdd.png

This is within the character.

[thin stratus]

@jagged goblet Multicast has to be called on the server and then replicates to all clients

[jagged goblet]

it is, its running off server then calling a multicast event

[thin stratus]

Well they can probably pass a class you don't want him to pass

Why not keeping class on the server?

[lament kettle]

so why even allow the option to pass things via server rpc?

[thin stratus]

@jagged goblet and where does it stop? Debugged a bit?

@lament kettle Because there are things less dangerous to pass

[lament kettle]

like?

[jagged goblet]

runs all the way to the end of the multicast

[thin stratus]

A username

[lament kettle]

hmm

[wary willow]

vectors

[thin stratus]

Rotators. Floats.

Axis values

[lament kettle]

the thing is... when a player selects the inventory slot, i call a function within the player

so that they can spawn the actor

[thin stratus]

The server should have the inventory too

[lament kettle]

it does

[thin stratus]

Pass the server the inventory slot number

And let him het the item and class himself

[wary willow]

@thin stratus Oh, does your crafting system on the MP has something like this?

[lament kettle]

ah

that makes sense

it's not dangerous to pass an inventory slot number

but it is dangerous to pass a class

[thin stratus]

@wary willow no, the inventory is very basic a it's just for making the crafting work

[wary willow]

Ah

[thin stratus]

@lament kettle Sure, the server has the authority. He can check if the item is really in the Inventory

@wary willow it has stacking and drag drop

And item types

No 3D representations

[wary willow]

Ah, could be a nice update

or new product

Something plug and play for people

But there may already be a few out there

[thin stratus]

It is plug and play. It's component based with interfaces

@jagged goblet and what exactly does not work then

You printed in the multicast and it's calling everywhere?

Mind sharing the code?

[jagged goblet]

yes its not calling everyone its just executing locally it seems

set to execute on all tho

bit of a mess since im trying things but let me screenshot

this is on the weapon bp itself

before muzzle event its a custom event that runs on server

[thin stratus]

What are you passing there

Are they actually replicated

[jagged goblet]

its the muzzle flash effect, i tried from nothing to set to replicated to rep notify

[thin stratus]

Did you check if they actually are valid

Like printing their display names

[jagged goblet]

hm well the effect is being played on the client just no one else can see it

and thats the only thing telling it to play the effect

[thin stratus]

Hmpf

[brittle sinew]

Just to confirm, are you sure the multicast itself isn't being executed?

Not that it's not producing the full intended effect, not that the emitter isn't being spawned, but that the multicast itself isn't being executed.

Confirming the result of that, either way, will help to find the issue

[jagged goblet]

how can i check if the multicast itself is being executed

[brittle sinew]

Dunno, print on it I guess?

Breakpoints in BP don't seem super reliable, at least to me

[jagged goblet]

string only seems to print on the client

i mean

hrm

[brittle sinew]

What do you mean by that? 😄

[jagged goblet]

i mean the muzzlevent is running and its set to multicast

so im not sure

and its running off server

[brittle sinew]

Okay, if you're sure the multicast isn't running that's good, I just wasn't sure what you meant with the 'I mean hrm' after that :p

[jagged goblet]

https://docs.unrealengine.com/latest/INT/BlueprintAPI/Effects/Components/ParticleSystem/SpawnEmitterAttached/index.html

'Does not replicate' is that true even if run on server

[brittle sinew]

Well, yes, but that's irrelevant here.

You're running it on multicast, so 'does not replicate' is really what you do want.

[jagged goblet]

I see

[brittle sinew]

Is the event reliable?

[jagged goblet]

no

let me set it to reliable

no difference

[brittle sinew]

Okay. And you're sure this weapon is replicated to all clients at the time of the RPC call?

[wary willow]

Hmmm, I just did it

[brittle sinew]

If the weapon isn't replicated and each client spawns its own version locally, an RPC won't work

[wary willow]

And it works for me

Blank FPS Project

Called FireWeapon on Server, Multi on the Particle

[jagged goblet]

weapon bp is set to replicated

if thats what you mean

uh

[wary willow]

https://gyazo.com/911a8cde5d5698b7f2aaa687dcdf3da3

Is the weapon not attached to the Character?

[jagged goblet]

yes its attached to the character

[wary willow]

Hmm, well, as you can see, it works

Can you show more of your setup?

[jagged goblet]

cant quite see the code are you running it off playerbp or weapon bp?

[wary willow]

This is the player

(fps template)

[jagged goblet]

im running it off weapon blueprint

[thin stratus]

That's fine though

The one thing here is that i still don't know if it actually calls

Put a print string into the multicast

[jagged goblet]

so i have inputaction that when pressed executes fire weapon from the weapon bp

[thin stratus]

So you perfoem a server rpc inside of the weapon?

[jagged goblet]

yes

[wary willow]

Ownership

[jagged goblet]

ok

let me try

[brittle sinew]

Well, to go off of that, have you confirmed the Server RPC is working to begin with?

[jagged goblet]

running it off the pawn n calling the weapon code

that would make mroe sense

[wary willow]

Aye

Not sure what other people do

[brittle sinew]

I assumed so since you said that it works locally, but are you doing the emitter spawning anywhere else?

[wary willow]

But, I mean, you can just call the funcions in the weapon rfom the character

(not sure what kind of weapon system you have, component based or what have you)

[jagged goblet]

hrm victor could you share your code from your test earlier?

screenshot? gif is hard to read

[wary willow]

hmm, oh I deleted it, but I can remake it, but the issue is still your weapon bp

How does the player access is?

(as in, how does the player get the weapon)

[jagged goblet]

has a reference to it

[wary willow]

right, but...

How does the player get it?

[jagged goblet]

so when i do input action shoot, get reference to weapon and run the fire weapon function

[wary willow]

(is your weapon part of your character BP) ?

[jagged goblet]

i use attach to component

since i want different weapons

and be able tos witch from them

[willow finch]

Hey are there any good youtube tutorials you guys would reccomend for setting up ue4.17 for steam multiplayer? Side note, do I need to pay the $100 steam fee to get it to work?

[lament kettle]

Question:

Why is it that when I attempt to grab a variable within player state, I get null (from the server). But I get a valid variable result from (owning client).

http://i.imgur.com/BjbDhRK.png

Inventory is null when server

inventory has something when client

[wary willow]

@willow finch No to fee.

And there's a million YT videos

Including Epic's official "BP Multiplayer" (more like lobby)

[willow finch]

@wary willow When you say "No" are you saying "yes you need to pay" or "no you can test it without paying"?

[wary willow]

@willow finch No to paying

[willow finch]

So I only need to pay when I am ready to publish?

[wary willow]

@willow finch That's right

Each game

$100

[willow finch]

TY for saving me $100

[wary willow]

Well, if you plan on doing it anyway

Why not?

[willow finch]

PUBG killer here i come

[wary willow]

gl

[willow finch]

ty

[wary willow]

TBH

I am like 99% sure you can create your own profile now for free

It's only when you want to publish that game you have to pay

Since I still have mine, and I didn't pay anything

(so you can use your game's app id, vice spacewars)

But not 100% since I haven't really had a need to actually submit a game up just yet 😉

[thin stratus]

@jagged goblet are you spawning it and attaching it?

Did you specify the client as owner when spawning?

Is the server rpc going through? You are kinda dodging to answer the print string question

@wary willow @willow finch For testing you can use 480 as app id. Once you want to properly setup everything, you'll want to have your own appid and pay the 100 fee

And there are differences in setting up steam and implementing it

Allar has a blog post on setting it up aka adding it to the project

[wary willow]

Right

Like I said, I have my appid to test

[thin stratus]

Implementation is not documented well

[wary willow]

My own

[thin stratus]

@willow finch To implement more functionality you need cpp or buy plugins

And use the Subsystem interface

Aka friends invites etc

@lament kettle is it always null?

Or just at start?

[jagged goblet]

im spawning and attacking it from the player bp cedric

[willow finch]

@thin stratus can you explain futher what you mean about "more functionality"

[thin stratus]

Everything that's not exposed to blueprint

Additonal SessionSettings like server name

Party system

Achievements might be exposed

Cards, friend list, friend invite

[lament kettle]

@thin stratus it's for some reason not getting the master inventory within the playerstate.

It's null whenever ran on the server.

[thin stratus]

Is it replicated

The component itself

[lament kettle]

http://i.imgur.com/8eoZZAp.png

GameplayPS == Playerstate

http://i.imgur.com/oiqkVGu.png

And grabbing the inventory there is null..

BUT if i do is from owning client, it works.

[thin stratus]

Is that an actor?

[lament kettle]

The inventory?

Yes.

[thin stratus]

Oh

Hm

Why are you passing the server pawn to the Inventory

[lament kettle]

Because I want the...

oh.

Umm... so that there's a reference?

to who owns the inventory

[thin stratus]

Yeah but shouldn't that be the player

Who's inventory it is

• you could use the Owner parameter for that

[lament kettle]

the server created the inventory, but its attached to the player.

[thin stratus]

Yeah but you pass the server pawn

Or at least you try

[lament kettle]

oh

ohh

i see

how do i get the clients pawn then?

[thin stratus]

Get the owner of the playerstate

And cast it to the playercontroller

[lament kettle]

from where?

I don't understand that logic.

[thin stratus]

Get owner

It's a node

Instead of GetPlayerController

Each playerstate has the players playercontroller as owner

[lament kettle]

like this
?

http://i.imgur.com/Uc4imsf.png

[thin stratus]

That's not what i wrote :D

Swap GetPlayerController0 with get owner

In your other screenshot

[lament kettle]

http://i.imgur.com/F7ymalU.png

do i pass the character

or the playerstate

?

as the owner

[thin stratus]

Technically you can just pass the owner of the playerstate

[lament kettle]

ah i see

[thin stratus]

To owner of the spawn node

[lament kettle]

yes i understand

ill remove the bp_base char ref

[thin stratus]

That's the playercontroller then

You can getowner inside the inventory and cast it to playercontroller etc if you need any refs

This will also allow the client to call server rpcs inside his own inventory actors

[lament kettle]

thanks @thin stratus you da bomb :]

[twin juniper]

@thin stratus hey

do you know if i could use an AI Controller to make my turrets fire projectiles?>

because i know u cant call an RPC on an actor without an owner

and thest turrets wouldnt have owners

so im just thinking...

how would i make them spawn these projectiles?

lol

and also the rotation, and replicating this rotation

just wondering if u know anything about this off the top of your head?

if you dont its cool 😃

[sweet spire]

You need more detail than that

Char rpc to server to tell server to tell turrets to do a thing

[twin juniper]

@sweet spire ok, so lets say i have a forge, i want players to be able to put items into it, and have a timer where something is createed after 5 seconds

but in order to spawn th e new item in and remove the old ones

i need to call a server rpc

[sweet spire]

Yeah

[twin juniper]

how do u call a server rpc

on that forge

if u dont have an owner

[sweet spire]

no u dont rpc

[twin juniper]

then how?

[sweet spire]

U let serer handle it

And have actor furance replicated

Furnace

Server*

[twin juniper]

how do i set it up to detect:

1. Is there a flamable?
2. Did the player attempt to ignite the flame
3. how long has it been since ignition
4. Remove flamable item
5. Add crafted item

there's a lot to check.

[sweet spire]

Bool
Rpc to server asking server to try an ignite
Server tracks it, replicates float
Same as 2
Server updates forge inventory array

[twin juniper]

@sweet spire yes but that bool needs to be set, on the forge

correct?

lol

[sweet spire]

Yup its rep notify

On notift if true then enable vfx if false turn off

What sets it is server when player turns it on

[twin juniper]

but

rep notifytt is called

on the Client

not on the server

[sweet spire]

Yeah thats the point

When its call on clients

The client will set there vfx visual of i5

It

[twin juniper]

Who receives RepNotify functions btw

the player controller?

[sweet spire]

Everyone

It be stored in ur forge actor

[twin juniper]

hm

[sweet spire]

Its just a state the visual

On and off

When the var is updated it rep notifies to every client who has that replicated forge actor

Then there clients toggle vfx on or off

[twin juniper]

hm

what about clients

[sweet spire]

Make sense?

[twin juniper]

who enter late?

and are not net relevant

[sweet spire]

Constructor

Sets vfx

Based on bool

Or wait

Rep notify might fire

When they first recieve actor maybe

[lilac egret]

is there a way to set everything to be replicated?

[sweet spire]

no that be retarded

[lilac egret]

to replicate blendspace

i only replicate the variable right

[sweet spire]

My assumption would be

U replicate a stat var to drive to blend space

State

[lilac egret]

yes

[sweet spire]

Anim bp dont get replicated i think so

[lilac egret]

but i only set the variable to be replicated or have to create a Run on server event followed by a multicast event?

[sweet spire]

The var must be inside the pawn and reped

Var rep should be fine

Depends when ur rep tho

Whats the var type and what drives it

Ie, float jump height etc

[lilac egret]

its a bool

[sweet spire]

Bool driving blend space

Thats prob why its not working

As far as i know u cant drive blend space with a bool

Defeats the purpose of blend space

[lilac egret]

haha